air that is supplied to a catalytic regenerator. The temperature
transmitter is calibrated from 300 to 500°F. The following data
correspond to the response obtained for a step change of + 5% in
the control valve that supplies fuel to the furnace.
- Consider The Furnace Shown In Figure 2 Which Is Used To Heat Air That Is Supplied To A Catalytic Regenerator The Tempe 1 (34.01 KiB) Viewed 32 times
- Consider The Furnace Shown In Figure 2 Which Is Used To Heat Air That Is Supplied To A Catalytic Regenerator The Tempe 2 (28.24 KiB) Viewed 32 times
units in each signal and in each block. Describe the needs of
controller operation in this system.
b. From the data, fit the process to a first-order model with dead
time. Determine the coefficient of determination R^2 in the
obtained model.
c) Tune a PID controller whose response fits the 1/4 Ziegler
& Nichols decay criterion. Describe the design of the
controller and its control response using performance graphs.
d. Consider that at minute 40, there is a disturbance on
the air temperature whose model is given by
Gd(s)=T(s)/2=-0.5/(1.8s+1). Determine the maximum deviation in the
temperature that occurs before said disturbance and the time in
which the controller corrects it.
Tiempo [min] 0 0.5 1.0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 T(t) [°F] 425 425 425 425 426.4 428.5 430.6 432.4 434 435.3 Tiempo [min] T(t) [°F] 5.5 436.6 6.0 437.6 7.0 439.4 8.0 440.7 9.0 441.7 10.0 442.5 11.0 443.0 12.0 443.5 14.0 444.1 20.0 445
Air Air Stack gases Fuel TT 23 TC 23